It is recommended that the relevant section of BS 5410 Part 1: latest edition is carefully read.
7:3 REPORTING
It is recommended that you use a report sheet and checklist. Make comments on the report where necessary
and give a copy to whoever has engaged your services, and retain and file your own copy. A suggested
layout is shown over.
7:4 COMMISSIONING SEALED SYSTEM
IMPORTANT
It is the responsibility of the installer to ensure that the boiler is commissioned by a competent
OFTEC Registered Commissioning Engineer
Page 28
7:5 FILLING THE SYSTEM
1) Check that the manual Air Vents on the boiler and tank are loosened.
2) Check both drain cocks are turned off (closed).
3) Connect the Filling Loop Hose from the incoming mains supply to the Double Check Valve and open the
Double Check Valve fully.
4) Open the Mains Isolating Valve part way to fill the system SLOWLY.
5) Flush system thoroughly and refill.
6) Vent radiator and any other manual Air Release Vents.
7) Check for leaks particularly on older systems which may operate on a lower pressure system.
8) When the system is completely full and vented, close both Mains Isolating Valve and Double Check Valve
and disconnect flexible Filling Loop Hose, catching water.
9) A suitable inhibitor against limescale and corrosion should be added to the system.
THE FILLING LOOP MUST BE DISCONNECTED WHEN NOT IN USE.
IMPORTANT
Do not allow water in filling loop to spill over the burner or other electrical components.
10) Set the red pointer of the Pressure Gauge to Cold Fill pressure.
Refer to 4:6
.
7:6 CHECK PRESSURE RELIE
F
VALVE OPERATION
This is checked by allowing the water pressure to increase until the valve operates - this should be between
2.7 and 3.3 bar.
Reduce the system pressure to achieve the initial cold fill pressure.
Ensure that the Tundish is fitted according to the latest edition of the Building Regulations.
Page 39 of 57
Installation & maintenance manual for Camray 5 Combi External Boilers
14/04/2005
file://D:\PL61500\PL61500.htm
